The best HACS addon by far in my opinion has been the Node-Red companion add on that makes combining HA with NR significantly easier and more powerful.

I do almost all of my automation in NR flows and HA is mainly API connector and dashboard frontend.

Couple new interesting ones in there thanks!

Big shout out to Adaptive Lighting. Absolutely love this integration

Thanks for sharing! Added several from this list.

This is a great list! Discovered a few new ones, thanks!

These are really cool, thank you. Added Spook and used it to clean up some broken entities.